Sunday, June24, 2018 L-36.com


Marine Weather and Tides
Vandenberg AFB, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:48AMSunset 8:19PM Saturday June 23, 2018 10:20 PM PDT (05:20 UTC) Moonrise 3:26PMMoonset 2:01AM Illumination 82% Phase: Waxing Gibbous; Moon at 11 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ673 Waters From Pt. Sal To Santa Cruz Island Ca And Westward 60 Nm Including San Miguel And Santa Rosa Islands- 824 Pm Pdt Sat Jun 23 2018
Tonight..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 5 to 6 ft at 10 seconds. Patchy fog.
Sun..SE winds 10 to 15 kt, with gusts to 20 kt around point conception. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 10 seconds. Patchy fog in the morning.
Sun night..SE winds 10 to 15 kt with gusts to 20 kt, becoming sw 10 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 9 seconds. Patchy fog.
Mon..Winds variable 10 kt or less, becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
Mon night..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 9 seconds. Patchy fog.
Tue..NW winds 10 to 15 kt, becoming 15 to 20 kt in the afternoon. Wind waves 2 to 3 ft. NW swell 4 to 5 ft at 9 seconds. Patchy fog in the morning.
Tue night..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 7 to 8 ft. Patchy fog after midnight.
Wed..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. NW swell 5 to 6 ft. Patchy fog.
Thu..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft. Patchy fog.
PZZ600 824 Pm Pdt Sat Jun 23 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1026 mb high was located 1000 nm west of point conception and a 1002 mb thermal low was near las vegas. An eddy will bring se winds to much of the waters tonight and Sunday.

7 Day Forecast for Marine Location Near Vandenberg AFB, CA
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location: 34.55, -121.24     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 240419
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
919 pm pdt Sat jun 23 2018

Synopsis 23 904 pm.

A strong eddy into Sunday will support continued cool conditions
and widespread low clouds for coastal and valleys areas. Night to
morning low clouds will become less widespread and burn off
earlier in the day much of next week. This will support warmer
conditions for many areas, most notable across the valleys.

Short term (sat-tue) 23 919 pm.

The latest satellite imagery shows a trough of low pressure
centered over northwest wyoming while moving east. A ridge of high
pressure over the eastern pacific ocean will build into the
west coast through Sunday. The effects of trough will linger into
Sunday as strong onshore flow and a deep marine layer remain in
place. The latest amdar sounding indicate a 2500 feet deep marine
layer in place at klax. A weak vorticity maximum brushing the
area could bring patchy night through morning drizzle as it
interacts with the deep marine layer already over the area.

Onshore flow will weaken some on Sunday, likely not being a
strongly onshore as today. This could cause a slight warm-up
versus today for the valley areas with slightly better clearing
relative to today. Clouds will likely still hug the beaches,
though into the afternoon on Sunday.

An update will issued shortly to tweak temperatures for Sunday.

*** from previous discussion ***
there should be a slightly lower marine inversion Sun night and
mon night. Low clouds and fog are expected to return quickly to
the coast and vlys during the evening hours, then clear to or off
the coast by midday to early afternoon each day. Otherwise,
mostly clear skies will prevail over the forecast area thru tue.

No major issues are anticipated with regards to winds through tue.

Moderate to strong onshore gradients will generate the usual gusty
afternoon evening southwesterly winds across the mountains and
deserts, but should be generally below advisory levels.

Temperatures are forecast to cool some sun, but remain several
degrees above normal for interior areas, then warm back up a few
degrees for most areas on Mon and tue. Highs in the warmest interior
vlys and lower mtns Sun should reach the mid 80s to lower 90s,
except mid 90s to around 100 in the antelope vly, then warm into the
upper 80s to lower 90s Mon and 90s tue, except upper 90s to 103 in
the antelope vly. For the vlys adjacent to the coast, highs will be
in the upper 70s to mid 80s Sun and mid 80s to around 90 Mon and
tue.

Long term (wed-sat) 23 144 pm.

The 12z GFS and ec are in generally good agreement with the large
scale features Wed thru fri, then differences show up for sat. Upper
level troffiness is forecast along the ca coast Wed thru fri, with
h5 heights possibly lowering to 585-587 dm by Fri morning per the
gfs and not quite as low for the ec. The GFS hangs onto the upper
trof with even lower h5 heights into Sat while the ec builds heights
with upper ridging nosing back into the area from the E pac. Will
lean slightly more toward the climatologically favored GFS (upper
troffiness into SRN ca) for the extended forecast.

It looks like the marine layer pattern will prevail Wed thru sat
with night and morning low clouds and fog for the coast and vlys,
altho the marine inversion will fluctuate some during the period,
probably shallowest Wed then increasing some thru sat. Otherwise,
mostly clear skies will prevail thru the period. Decent onshore
gradients should bring typical breezy to locally gusty S to w
afternoon and evening winds each day to the region, especially over
the mtns and deserts. Temps should be near normal to several degrees
above normal on wed, then cool a few degrees to near normal to
slightly below normal overall by Fri and sat.

Aviation 24 0033z.

At 00z at klax... The inversion was around 2200 feet deep. The
top of the inversion was around 4000 feet with a temperature of
about 23 degrees celsius.

High confidence in kpmd and kwjf with moderate confidence
elsewhere for 00z tafs due to uncertainty mainly in flight
category of low cigs. There is a 30 percent chance of one flight
category lower than represented in 00z tafs. There is a 30 percent
chance that MVFR or lower CIGS prevail through the TAF period for
coastal tafs from ksba to klgb including klax.

Klax... Moderate confidence in 00z taf. There is a 30 percent
chance that MVFR or lower CIGS will prevail through the taf
period. There is a 30 percent chance that low MVFR CIGS will not
occur. Any east component of winds are expected to remain below 8
kts.

Kbur... Moderate confidence in 00z taf. Occasional 12010g15 is
possible between 06z and 15z. There is a 30 percent chance of low
MVFR CIGS between 06z and 13z.

Marine 23 824 pm.

Moderate to high confidence in current forecast. Winds are
expected to remain through SCA thresholds through Monday, before
increasing to near SCA levels Tuesday afternoon to evening. In the
short term, southeast winds are expected to continue overnight
into Sunday, with gusts up to around 20 knots... Strongest near
point conception. There is a 30% chance of occasional gusts to 25
knots late Sunday morning through Sunday evening over pzz673-676
and possibly across the far western portion of the santa barbara
channel. SCA winds are likely over the outer waters Tuesday night
through Thursday.

For the inner waters north of point sal... Conditions will remain
below SCA levels through Wednesday.

For the inner waters south of point conception... Conditions will
remain below SCA levels through Tuesday, with SCA winds over the
western sba channel possible Wednesday and Thursday. Southeast
winds tonight and Sunday will be strongest in the santa barbara
channel, and the san pedro channel, where short period chop up to
3 feet is likely.

Fire weather 23 1142 am.

Strengthening onshore flow combined with a deepening marine layer
pattern will bring a gradual cooling trend for most areas, especially
coastal and valley areas. Temperatures will still remain very warm
today across interior sections, with some triple digit readings today
across the antelope valley and interior valleys of san luis obispo
county, with some cooling on Sunday. Humidities in these areas as
well as the mountains will fall into the 8 to 15 percent range today,
then trending higher on Sunday. Strengthening onshore winds will
add to the fire weather threat across interior sections today and
Sunday, with gusts generally ranging between 25 and 40 mph across
the mountains, deserts, and interior valleys, with isolated gusts
as high as 50 mph in the foothills of the antelope valley. As of
10 am, the lax-daggett gradient is around +6 mb, and is expected
to peak around + 9 mb later this afternoon. The combination of very
warm and dry conditions combined with these strong onshore winds
will bring elevated fire danger through the weekend across the
mountains, deserts, and interior valleys of san luis obispo county,
with the potential for brief critical fire weather conditions
today. The greatest fire weather threat today and tomorrow will be
the highway 14 corridor from santa clarita valley to the antelope
valley.

Lox watches warnings advisories
Ca... None.

Pz... None.

Hazard potential outlook (tue-sat)
No significant hazards expected.

Public... Sirard hall
aviation... Munroe
marine... Smith
fire weather... Gomberg
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46218 - Harvest, CA (071) 25 mi50 min 57°F6 ft
46259 26 mi58 min 58°F9 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi90 min NE 3.9 G 5.8 57°F 55°F6 ft1010.2 hPa (+0.0)
PTGC1 - Point Arguello, CA 31 mi80 min N 4.1 G 4.1 58°F 1010.7 hPa (+0.4)
46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA 45 mi40 min N 1.9 G 3.9 56°F1010.2 hPa
46215 - Diablo Canyon, CA (076) 49 mi53 min 58°F4 ft

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Vandenberg Air Force Base, CA38 mi82 minN 04.00 miFog/Mist58°F56°F96%1010.7 hPa

Wind History from VBG (wind in knots)
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Last 24hrCalmCalmS3CalmCalmCalmCalmCalmCalmCalmSW6W3W5W6W7W8NW8NW7NW7N4W4CalmCalmCalm
1 day agoN9N6NW4N4NW3N3CalmCalmCalmS3CalmW6N7NW86NW8N11N9
G15
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2 days agoN10N10N8NW3CalmNW4NW3CalmCalmCalmCalm--4N7NW8N10N9NW9NW12N10N10NW9N9N8

Tide / Current Tables for Point Arguello, California
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Point Arguello
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Sun -- 02:50 AM PDT     0.04 feet Low Tide
Sun -- 03:33 AM PDT     Moonset
Sun -- 05:50 AM PDT     Sunrise
Sun -- 09:10 AM PDT     3.37 feet High Tide
Sun -- 01:51 PM PDT     1.82 feet Low Tide
Sun -- 05:20 PM PDT     Moonrise
Sun -- 08:19 PM PDT     Sunset
Sun -- 08:22 PM PDT     5.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.90.90.200.311.82.63.13.43.22.92.421.82.12.63.54.45.15.55.54.93.8

Tide / Current Tables for Oil Platform Harvest (Topex Project), California
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Oil Platform Harvest (Topex Project)
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Sun -- 02:53 AM PDT     0.05 feet Low Tide
Sun -- 03:33 AM PDT     Moonset
Sun -- 05:51 AM PDT     Sunrise
Sun -- 09:02 AM PDT     3.39 feet High Tide
Sun -- 01:54 PM PDT     1.80 feet Low Tide
Sun -- 05:19 PM PDT     Moonrise
Sun -- 08:17 PM PDT     5.83 feet High Tide
Sun -- 08:18 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
20.90.20.10.311.92.63.23.43.22.82.31.91.822.73.64.65.45.85.753.9

Weather Map and Satellite Images
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GOES Local Image of Southwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Los Angeles/Oxnard, CA (1,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, CA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.